| |
| Age Group | Male | Female | North Dakota, 2000, Universe: 001 Total population Universe Population: 642,200 | ||
| Population | Pct | Population | Pct |  | |
| Total | 320,524 | 49.9 | 321,676 | 50.1 | |
| 0- 4 | 20,185 | 3.1 | 19,215 | 3.0 | |
| 5- 9 | 21,997 | 3.4 | 20,985 | 3.3 | |
| 10-14 | 24,499 | 3.8 | 22,965 | 3.6 | |
| 15-19 | 27,760 | 4.3 | 25,858 | 4.0 | |
| 20-24 | 26,831 | 4.2 | 23,672 | 3.7 | |
| 25-29 | 20,268 | 3.2 | 18,524 | 2.9 | |
| 30-34 | 19,534 | 3.0 | 18,561 | 2.9 | |
| 35-39 | 23,668 | 3.7 | 23,323 | 3.6 | |
| 40-44 | 25,577 | 4.0 | 25,436 | 4.0 | |
| 45-49 | 24,351 | 3.8 | 23,085 | 3.6 | |
| 50-54 | 19,523 | 3.0 | 18,472 | 2.9 | |
| 55-59 | 14,599 | 2.3 | 14,327 | 2.2 | |
| 60-64 | 11,851 | 1.8 | 12,656 | 2.0 | |
| 65-69 | 10,861 | 1.7 | 12,281 | 1.9 | |
| 70-74 | 10,473 | 1.6 | 12,286 | 1.9 | |
| 75-79 | 8,265 | 1.3 | 10,820 | 1.7 | |
| 80-84 | 5,715 | 0.9 | 9,051 | 1.4 | |
| 85+ | 4,567 | 0.7 | 10,159 | 1.6 | |